Re: gEDA: Gnucap - looking for development help

[sven <sven_dot_wilhelmsson-at-NOSPAMcomhem_dot_se>]

On Wednesday 31 August 2005 03:28, Dan McMahill wrote:
> José Roberto B. de A. Monteiro wrote:
> > Hello Al,
> >
> > I am working in an user interface for gnucap. Nowadays it is pre-alpha
> > test... A screenshot of this interface is attached. I am working to make
> > it better and more intuitive. My aim is to provide an easy GNU simulation
> > system for undergraduate students.
> >
> > The program reads a schematic from gschem, simulate it, according to a
> > desired mode (AC, DC, TRAN, etc.) and plots results using gnuplot. I hope
> > to put it as soon as possible in an repository like savanna. Did you said
> > an OO interpreted language? It is written all in Guile.
> >
> > Regards,
> >
> > Betoes
>
> neato.
>
> You know what I'd love to see?  Some sort of inter-process communication
> where you could run a simulation and do things like click on a net in
> the schematic for plotting a result or backannotate dc operating points
> to the schematic.  If you're doing transistor level design, the ability
> to with one click have transconductances, currents, and voltages all
> annotated to the schematics is really useful.
>
> With some up front design work, you could probably use such a facility
> for cross probeing a layout where you could select a component in either
> schematic or layout and zoom to it in the other.  Again, a very useful
> feature.
>
> -Dan

I have just done some experiments with one-click Gnucap DC simulations  with
backannotation of DC-voltages into SCH.
Yes, it seems to be a useful thing, and very fun to play with.  
Whats next? Would it be useful to backannotate internal states (Gnucap probes)
of devices into sch? Which devices? Which probes? Power, current, charge ...? 
Everything?

I'm interested to know of which features of this kind people consider useful.

Backannotation from pcb is  not of interest for Hec, since Hec  does SCH and 
PCB simultaneosly. (Note: Hec is an experimental program and not really 
useful for real work!)

/SvenW

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